Anaes Vivas · Applied cardiovascular & respiratory physiology
Data viva — the ventricular pressure-volume loop
A Primary data viva — read the PV loop (EDV, ESV, isovolumetric phases, ejection, filling); show stroke volume as the width; explain preload (EDPVR/Frank-Starling), afterload (tilt) and contractility (ESPVR slope).
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ANZCAFRCAABAEDAIC
Prompt
A labelled left ventricular pressure-volume loop is shown (pressure on Y, volume on X). Identify the phases and corner points, mark the stroke volume, and state how the loop changes with increased preload, increased afterload, and increased contractility.
Stimulus
A labelled left ventricular pressure-volume loop is shown (pressure on the Y-axis, volume on the X-axis). Identify the phases and corner points, mark the stroke volume, and state how the loop changes with increased preload, increased afterload, and increased contractility.
References3ShowHide
- [1]Granzier HL. Discovery of Titin and Its Role in Heart Function and Disease. Circ Res, 2025.PMID 39745989
- [3]Trayanova NA, et al. Cardiac electromechanical models. Front Physiol, 2011.PMID 21886622
- [4]Usai DS, et al. The isolated, perfused working heart preparation of the mouse-Advantages and pitfalls. Acta Physiol, 2025.PMID 40078031